77 lines
2.1 KiB
C
77 lines
2.1 KiB
C
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/*
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*
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* @APPLE_LICENSE_HEADER_START@
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*
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* Copyright (c) 1999-2008 Apple Inc. All Rights Reserved.
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*
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* This file contains Original Code and/or Modifications of Original Code
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* as defined in and that are subject to the Apple Public Source License
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* Version 2.0 (the 'License'). You may not use this file except in
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* compliance with the License. Please obtain a copy of the License at
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* http://www.opensource.apple.com/apsl/ and read it before using this
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* file.
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*
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* The Original Code and all software distributed under the License are
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* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
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* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
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* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
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* Please see the License for the specific language governing rights and
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* limitations under the License.
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*
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* @APPLE_LICENSE_HEADER_END@
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*
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*/
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/*
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File: OSBufferPool.h
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Contains: Fast access to fixed size buffers.
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Written By: Denis Serenyi
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*/
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#ifndef __OS_BUFFER_POOL_H__
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#define __OS_BUFFER_POOL_H__
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#include "OSQueue.h"
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#include "OSMutex.h"
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class OSBufferPool
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{
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public:
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OSBufferPool(UInt32 inBufferSize) : fBufSize(inBufferSize), fTotNumBuffers(0) {}
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//
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// This object currently *does not* clean up for itself when
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// you destruct it!
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~OSBufferPool() {}
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//
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// ACCESSORS
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UInt32 GetTotalNumBuffers() { return fTotNumBuffers; }
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UInt32 GetNumAvailableBuffers() { return fQueue.GetLength(); }
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//
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// All these functions are thread-safe
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//
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// Gets a buffer out of the pool. This buffer must be replaced
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// by calling Put when you are done with it.
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void* Get();
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//
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// Returns a buffer retreived by Get back to the pool.
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void Put(void* inBuffer);
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private:
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OSMutex fMutex;
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OSQueue fQueue;
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UInt32 fBufSize;
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UInt32 fTotNumBuffers;
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};
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#endif //__OS_BUFFER_POOL_H__
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